顺北油田修井衬管解堵工艺研究与应用

Research and application of plugging removal technology for well repair liner in Shunbei Oilfield

顺北油田埋藏深,钻完井难度大,衬管种类繁多且内径偏小,生产、作业过程逐渐出现衬管堵塞造成油井停产。受衬管内径所限,不满足常规钻杆带工具处理堵塞。通过对顺北油田衬管类型、堵塞情况进行分析,将杆状磨鞋、连续油管处理衬管堵塞工艺进行介绍。目前采油四厂已经成功3井次,为超深井处理衬管堵塞,积累了宝贵经验。

The Shunbei Oilfield is deeply buried,making drilling and completion difficult.There are various types of lining pipes with small inner diameters,which gradually lead to lining pipe blockage during production and operation,resulting in oil well shutdown.Due to the limitation of the inner diameter of the lining pipe,it does not meet the requirements for conventional drilling tools to handle blockages.The article analyzes the types and blockages of lining pipes in Shunbei Oilfield,and introduces the techniques for treating lining pipe blockages using rod shaped grinding shoes and continuous tubing.At present,Oil Production Plant 4 has successfully completed 3 well operations,accumulating valuable experience in treating liner blockage for ultra deep wells.